CA2373344A1 - Corrosion-resistant metallic member, metallic separator for fuel cell comprising the same, and process for production thereof - Google Patents

Corrosion-resistant metallic member, metallic separator for fuel cell comprising the same, and process for production thereof Download PDF

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Publication number
CA2373344A1
CA2373344A1 CA002373344A CA2373344A CA2373344A1 CA 2373344 A1 CA2373344 A1 CA 2373344A1 CA 002373344 A CA002373344 A CA 002373344A CA 2373344 A CA2373344 A CA 2373344A CA 2373344 A1 CA2373344 A1 CA 2373344A1
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CA
Canada
Prior art keywords
corrosion
metallic member
resistant metallic
resistant
producing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002373344A
Other languages
French (fr)
Other versions
CA2373344C (en
Inventor
Yasushi Kaneta
Shinobu Takagi
Hiroaki Yoshida
Yoshihisa Suzuki
Masaki Shinkawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2001055403A external-priority patent/JP2002260681A/en
Priority claimed from JP2001055565A external-priority patent/JP2002254180A/en
Priority claimed from JP2001173920A external-priority patent/JP2002367434A/en
Priority claimed from JP2001294487A external-priority patent/JP2003105564A/en
Priority claimed from JP2001295964A external-priority patent/JP2003105523A/en
Application filed by Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Publication of CA2373344A1 publication Critical patent/CA2373344A1/en
Application granted granted Critical
Publication of CA2373344C publication Critical patent/CA2373344C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0206—Metals or alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/018—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of a noble metal or a noble metal alloy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0223—Composites
    • H01M8/0228—Composites in the form of layered or coated products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0206—Metals or alloys
    • H01M8/0208—Alloys
    • H01M8/021—Alloys based on iron
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
    • H01M8/0254—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form corrugated or undulated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/923—Physical dimension
    • Y10S428/924—Composite
    • Y10S428/925—Relative dimension specified
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9335—Product by special process
    • Y10S428/934—Electrical process
    • Y10S428/935—Electroplating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9335—Product by special process
    • Y10S428/938—Vapor deposition or gas diffusion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12875—Platinum group metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12889—Au-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12896—Ag-base component

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Fuel Cell (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

A highly corrosion-resistant material and a corrosion-resistant member which are improved in corrosion resistance, adhesion, contact electrical resistance, electrical conductivity, airtightness, etc. and are suitable for use as, e.g., a metallic separator for polymer electrolyte fuel cells (PEFC); and a process for producing them. A thin noble-metal layer is formed on the desired part of the surface of a metallic base and then subjected to compression working. The coated base may further be subjected to anticorrosive treatment with a liquid phase containing a peroxide or ozone or with an active gas atmosphere.

Claims (31)

1. A corrosion-resistant metallic member which comprises a metallic base and a thin noble-metal layer deposited on at least part of the metallic base, having been subjected to compression working to reduce the total thickness of the base and the thin layer by 1% or more.
2. The corrosion-resistant metallic member of claim 1, which further having been subjected to a heat treatment to remove the work hardening resulting from the compression working.
3. The corrosion-resistant metallic member of claim 1, wherein the adhesion strength between the metallic base and the thin noble-metal layer is 50% or lower in terms of the amount of the layer peeling off in a peeling test after a corrosion test.
4. The corrosion-resistant metallic member of claim 1, wherein the thin noble-metal layer has a thickness of from 0.1 to 100 nm and is constituted of a dense structure.
5. The corrosion-resistant metallic member of claim 1, wherein the thin noble-metal layer comprises one metal selected from the group consisting of gold, platinum, palladium, silver, rhodium, and ruthenium, or an alloy comprising at least one metals selected from said group.
6. The corrosion-resistant metallic member of claim 1, wherein the thin noble-metal layer is deposited on the metallic base by at least one technique selected from the group consisting of plating, screen printing, PVD, and CVD.
7. The corrosion-resistant metallic member of claim 1, wherein the metallic base is a metallic plate material and the thin noble-metal layer has been deposited on at least part of at least one of the front side and back side of the metallic plate material.
8. The corrosion-resistant metallic member of claim 1, wherein the metallic base comprises an elemental metal selected from the group consisting of iron, nickel, titanium, copper, and aluminum or an alloy comprising at least one metal selected from said group.
9. The corrosion-resistant metallic member of claim 1, which further having been subjected to an anticorrosive treatment selected from the group consisting of an anticorrosive treatment with a liquid phase containing a peroxide and ozone or an anticorrosive treatment with an active gas atmosphere.
10. The corrosion-resistant metallic member of claim 9, which has been formed into a given shape, the forming having been conducted after the compression working and before the anticorrosive treatment or conducted after the anticorrosive treatment.
11. The corrosion-resistant metallic member of claim 9, which has undergone an anticorrosive treatment with an acid or alkaline liquid phase containing a peroxide or ozone.
12. The corrosion-resistant metallic member of claim 11, wherein the peroxide is hydrogen peroxide.
13. The corrosion-resistant metallic member of claim 9, which has undergone an anticorrosive treatment with the liquid phase at a temperature lower than the boiling point of the solvent constituting the liquid phase.
14. The corrosion-resistant metallic member of claim 9, which has undergone an anticorrosive treatment with an atmosphere of a plasma of a working gas or with an ozone gas atmosphere.
15. The corrosion-resistant metallic member of claim 9, which has undergone the anticorrosive treatment at a temperature of 300°C or lower.
16. A process for producing a corrosion-resistant metallic member which comprises the steps of: depositing at least one noble metal on at least part of a metallic base to form a thin noble-metal layer; and compressing the resultant noble-metal-coated metallic material to reduce the total thickness of the base and the thin layer by 1% or more.
17. The process for producing a corrosion-resistant metallic member of claim 16, which further comprises a heat treatment step for removing the work hardening resulting from rolling.
18. The process for producing a corrosion-resistant metallic member of claim 16, wherein the adhesion strength between the metallic base and the thin noble-metal layer is 50% or lower in terms of the amount of the layer peeling off in a peeling test after a corrosion test.
19. The process for producing a corrosion-resistant metallic member of claim 16, wherein the thin noble-metal layer has a thickness of from 0.1 to 100 nm and is constituted of a dense structure.
20. The process for producing a corrosion-resistant metallic member of claim 16, wherein the thin noble-metal layer is made of one metal selected from the group consisting of gold, platinum, palladium, silver, rhodium, and ruthenium, or an alloy comprising at least one metals selected from said group.
21. The process for producing a corrosion-resistant metallic member of claim 16, wherein the thin noble-metal layer is deposited on the metallic base by at least one technique selected from the group consisting of plating, screen printing, PVD, and CVD.
22. The process for producing a corrosion-resistant metallic member of claim 16, wherein the metallic base is a metallic plate material and the thin noble-metal layer is deposited on at least part of at least one of the front side and back side of the metallic plate material.
23. The process for producing a corrosion-resistant metallic member of claim 16, wherein the metallic base comprises an elemental metal selected from the group consisting of iron, nickel, titanium, copper, and aluminum or an alloy comprising at least one metal selected from said group.
24. The process for producing a corrosion-resistant metallic member of claim 16, which further includes an anticorrosive treatment step which is either an anticorrosive treatment with a liquid phase containing a peroxide or ozone or an anticorrosive treatment with an active gas atmosphere.
25. The process for producing a corrosion-resistant metallic member of claim 24, which further includes the step of forming into a given shape, the forming step being conducted after the compression working and before the anticorrosive treatment or conducted after the anticorrosive treatment.
26. The process for producing a corrosion-resistant metallic member of claim 25, wherein the anticorrosive treatment is conducted with an acid or alkaline liquid phase containing a peroxide or ozone.
27. The process for producing a corrosion-resistant metallic member of claim 26, wherein the peroxide is hydrogen peroxide.
28. The process for producing a corrosion-resistant metallic member of claim 24, wherein the anticorrosive treatment in the liquid phase is conducted at a temperature lower than the boiling point of the solvent constituting the liquid phase.
29. The process for producing a corrosion-resistant metallic member of claim 24, wherein the anticorrosive treatment is conducted with an atmosphere of a plasma of a working gas or with an ozone gas atmosphere.
30. The process for producing a corrosion-resistant metallic member of claim 24, wherein the anticorrosive treatment is conducted at a temperature of 300°C or lower.
31. A metallic separator for fuel cells, which comprises the corrosion-resistant metallic member of any one of claims 1 to 15, said metallic member having, on at least one of the front and back sides thereof, passages for enabling a fuel gas or oxidizing gas to flow therethrough.
CA2373344A 2001-02-28 2002-02-26 Corrosion-resistant metallic member, metallic separator for fuel cell comprising the same, and process for production thereof Expired - Fee Related CA2373344C (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP2001055403A JP2002260681A (en) 2001-02-28 2001-02-28 Metallic separator for solid high polymer fuel cell, and method of manufacturing the same
JP2001-055403 2001-02-28
JP2001-055565 2001-02-28
JP2001055565A JP2002254180A (en) 2001-02-28 2001-02-28 High corrosion resistivity material and manufacturing method therefor
JP2001173920A JP2002367434A (en) 2001-06-08 2001-06-08 Corrosion resistant metal member and metal separator for fuel cell using the member
JP2001-173920 2001-06-08
JP2001294487A JP2003105564A (en) 2001-09-26 2001-09-26 Method of manufacturing corrosion resistant metallic member and corrosion resistant metallic member
JP2001-294487 2001-09-26
JP2001-295964 2001-09-27
JP2001295964A JP2003105523A (en) 2001-09-27 2001-09-27 Method of manufacturing corrosion resistant metallic member and corrosion resistant metallic member

Publications (2)

Publication Number Publication Date
CA2373344A1 true CA2373344A1 (en) 2002-08-28
CA2373344C CA2373344C (en) 2012-03-20

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CA2373344A Expired - Fee Related CA2373344C (en) 2001-02-28 2002-02-26 Corrosion-resistant metallic member, metallic separator for fuel cell comprising the same, and process for production thereof

Country Status (3)

Country Link
US (1) US6699593B2 (en)
EP (1) EP1237215A3 (en)
CA (1) CA2373344C (en)

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US20030068523A1 (en) 2003-04-10

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